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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Strange error message
Date: Sun, 01 Jun 2014 14:54:41 +0100
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Date: 2014-06-01T14:54:41+01:00
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Charly <carl.weierstrass@googlemail.com> writes:

> Thank you for the rapid answer. I wondered if it is a bug in GNAT.
> I thought, that I always have to override abstract function and 
> procedures in concrete types and can override concrete functions
> and procedures only as needed.

This is in the AARM 3.9.3(6) [1]. It'ss apparently intended to replace
'type renaming', and (in the comments on AI95-00391 [2]) is described as
'a last minute "quick fix."'.

[1] http://www.ada-auth.org/standards/12aarm/html/AA-3-9-3.html#p6
[2] http://www.ada-auth.org/cgi-bin/cvsweb.cgi/ais/ai-00391.txt?rev=1.9